Towel holder



FIG. 1 is a top, front, and left side perspective view of a towel holder showing my new design, the broken-line disclosure being for illustrative purposes only and forming no part of the claimed design;

FIG. 2 is an enlarged left side elevational view thereof;

FIG. 3 is an enlarged front elevational view thereof;

FIG. 4 is an enlarged right side elevational view thereof;

FIG. 5 is an enlarged top plan view thereof; and,

FIG. 6 is an enlarged bottom plan view thereof.

The broken lines in FIG. 1 represent unclaimed environmental subject matter. 

The ornamental design for a towel holder, as shown and described. 